diff --git a/apps/inm/services.py b/apps/inm/services.py
index 28489fbc..a6fe9669 100644
--- a/apps/inm/services.py
+++ b/apps/inm/services.py
@@ -200,7 +200,7 @@ class InmService:
                 cls.update_mb(instance, in_or_out)
                 PumService.mio_purin(instance, is_reverse)
             elif instance.type == MIO.MIO_TYPE_DO_IN:
-                mioitems = MIO.objects.filter(mio=instance)
+                mioitems = MIOItem.objects.filter(mio=instance)
                 if is_reverse:
                     for item in mioitems:
                         do_out(item)
@@ -216,7 +216,7 @@ class InmService:
                 cls.update_mb(instance, in_or_out)
                 SamService.mio_saleout(instance, is_reverse)
             elif instance.type == MIO.MIO_TYPE_DO_OUT:
-                mioitems = MIO.objects.filter(mio=instance)
+                mioitems = MIOItem.objects.filter(mio=instance)
                 if is_reverse:
                     for item in mioitems:
                         do_in(item)